Stringing pianos



(No Model.)

L. A. KINDLER.

STRINGING PIANOS.

No. 454,911. Patented June 30,1891.

Fyl.

W] TNESSES: INVEN T OR %Ja m t'u/167? 6 I ATTORNEY.

UNITED STATES PATENT OFFICE.

LOUIS A. KINDLER, OF CLEVELAND, OHIO.

STRINGING PIANOS.

SPECIFICATION frming part of Letters Patent No. 454311, dated June 30, 1891. Application filed January 29, 1891. Serial No. 379,594. (No model.)

To (oZZ whom it may conccrn:

Be it known that I, LOUIS A. KINDLER, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio,haveinvented certain new and usef ullinprovements in Stringiug Pianos, of which the following is a specification.

This invention relates to the stringing of pianos and the means of reguiating the tension of the strings for tuning; and it consists i n the novel Construction and coinbinations, as hereinafter described, and pointed out in the ciaims.

In the acconpanying drawings, Figure l is a front eievation of a part of a fraine having a few strings, showing ny improvement. Fig. 2 is a longitudinal section of the same. Fig. 3 is a View of one of the adjusting-screws.

A represents a metal frane, which may be of any of the well-known forms.

B B are the strings, which are looped and attaehed at both ends to hitch-pins Z; b.

C is a metal bridge-treme firinly Secured across one end of said frame A, in which the hitch-pins for one end of the strings are placed. In the elevated portion of said bridget'raine are arranged adjusting-serews D D, in staggered position to admit of close ar 'angenient of the strings.

The screws D D are provided on their lower ends with swiveled nuts (Z d, having notches in their faces for catching and holding the strings, and the screws have square or sexagon heads for convenienee of turning them. Through said bridge C are made hoies or siots in eonjunetion with each screw-hoie, through which the strings are passed in stringing, so that the adjusting-serews may bear upon the strings for regulating their tension. The bridge-franie is also provided with a flange E, having perforations,tln'ough which the stri ugs are also passed.

F is a sounding-board bridge.

From the :foregoing it will 'he seen that the tension of the strings is readiiy adjusted by the said screws D pressing upon and stretching theni to any degree dcsired.

Having described my invention, what I claim is 1. In a piano-stringing deviee, the conbination, with bridge-fraine C, having agraffe E integrai therewith, and having the staggered screw-holes, provided With Slots for the strings B, of the screws D, having swiveied nuts (I,

`and for the purpose specified.

2. The combination of frane A, strings B, bridge-frane C, having staggered screw-hoies and slots, adj Listing-screws D, having swiveled nuts (Z for reguiating the tension of the strings, substantiaily as and for the purpose specified.

LOUIS A. KINDLER.

XVitnesses:

iEo. W. TIBBITTS, E. JAY PINNEY. 

